Komatsu PC200-8M0 Shop Manual page 1064

SEN06145-00
Assembly
1. Assembly of piston (2)
1) Install ring (16) and U-packing (15) to pis-
ton (11), and secure them with snap ring
(14).
2) Tighten valve (13) lightly, and secure it
with lock plate (12).
2. Assembly of idler cushion
1) Using tool M2, press fit bushing (10) into
cylinder (7).
2) Using tool M3, install dust seal (9) to cylin-
der (7).
3) Secure them by using snap ring (8).
4) Install plate (7a), cylinder (7) and yoke (6)
to spring (5). Install the assembly to tool
M1.
2
Sliding surface of cylinder:
12
50-400
3.
Grease (G2-LI)
400 Undercarriage and frame
Disassembly and assembly of idler cushion
5) Apply hydraulic pressure slowly to com-
press the spring, and then tighten nut (4)
so that the installed length of the spring is
dimension (a) and secure it with lock plate
(3)
a Installed length (a) of spring:
PC200-8M0: 389 mm
PC200LC-8M0, PC220-8M0,
PC220LC-8M0: 433 mm
6) Remove idler cushion assembly (1) from
tool M1.
Install piston assembly (2) to idler cushion
assembly (1).
2
Sliding surface of cylinder:
2
Wear ring: Grease (G2-LI)
a Install the piston assembly with the valve
installed position facing outward.
a Pump 300 cc of grease (G2-LI) into the
cylinder and bleed air. Check that grease
comes out of the grease hole.
PC200, 200LC, 220, 220LC-8M0
Grease (G2-LI)